accumulate: Add parameters to exercise placeholder (closes #537)
accumulate: Add parameters to exercise placeholder (closes #537)

Signed-off-by: Ian Dexter D Marquez <87349516b0b926b484d378a2708a5685a79f13a5@users.noreply.github.com>

N-Parsons/exercism-python,jmluy/xpython,smalley/python,N-Parsons/exercism-python,behrtam/xpython,smalley/python,exercism/xpython,exercism/python,pheanex/xpython,exercism/xpython,mweb/python,mweb/python,behrtam/xpython,jmluy/xpython,exercism/python,pheanex/xpython